HOW TO ORDER/ NOMENCLATURE
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1 HOW TO ORDER/ Setscrew Ball Bearings - Inch HOW TO ORDER There are two ways to specify DODGE Bearings. Most of the product offering have part numbers with listings shown throughout this catalog. Use of part numbers ensures accurate ordering processing. When part numbers are not shown, the product may be specified by description or part name. This method is used when ordering units that include modifications or options. To order by description, use the nomenclature key shown below and add any special instruction to the end of the description for options not covered by the nomenclature. PB SCAH 4S NL Housing Style Bearing Type Shaft Size Modifications/ Features CYL Cylindrical Unit FB Bolt Flange F4B 4 Bolt Flange FB Flanged Bracket FC Flanged Cartridge (Piloted Flange) F&B Fan & Blower Pillow Block HNG Hanger Bearing INS Insert LF Light Duty Flange, 3 Bolt LFT Light Duty Flange, Bolt NSTU Narrow Slot Take-Up PB Pillow Blocks TB Tapped Base Pillow Blocks TP Top Angle WSTU Wide Slot Take-Up CC SC SCH SCAH SCEZ SCM SCMAH SCNP SL VSC Normal Duty, Setscrew Locking for Fan & Blower Bearings Normal Duty, Wide Inner Ring, Setscrew Locking Bearings Normal Duty, Wide Inner Ring, Setscrew Locking Bearings with high backing height for use in non-expansion and expansion mounted units. Air Handling SC Bearings E-Z KLEEN SC Bearings Medium Duty, Wide Inner Ring, Setscrew Locking Bearings Air Handling Medium Duty, Wide inner Ring, Setscrew Locking Bearings Nickel Plated SC Bearings Light Duty, Narrow Inner Ring, Setscrew Locking Bearings Intermediate Duty, Narrow Inner Ring, Setscrew Locking Bearings Inches: 4 Inches and 6ths First digit: number of inches. Second and third digit: number of sixteenths of an inch. 4 indicates -4/6 or -/4 S Indicates the next smaller ring size other than standard. 4S signifies L -/4 6 ring size Indicates the next larger ring size other than standard. L signifies ring size. Metric: 5 First two digits: M Number of millimeters Signifies metric CR E FF LL NL NY Corrosion resistant insert Expansion Flingers on both sides of the insert Low torque labyrinth seals No lube or sealed for life Nylon coated housing (used with SCEZ) FEATURE/BENEFITS SETSCREWS BALL BEARINGS PAGE ECCENTRIC COLLAR BALL BEARINGS PAGE 9 D-LOK BALL BEARINGS PAGE 87 DIMENSIONS PAGE 4
2 Setscrew Ball Bearings DODGE mounted ball bearings are primarily designed for radial loading. However, they have the capacity to carry thrust loads and combined radial/thrust loads. The maximum recommended load which can be applied is limited by various components in the system, such as bearing, housing, shaft attachments, speed and life requirements. DODGE mounted ball bearings have been applied successfully when these limits have been exceeded under controlled operating conditions. Contact DODGE Engineering for applications which exceed these recommendations. Select a bearing from the Selection Chart that has a radial load rating at the operating speed equal to or greater than the calculated Equivalent Radial load for a desired L life. This simple method is all that is required for the majority of general applications and provides for occasional average shock loads. L Hours Life is the life which may be expected for at least 9% of a given group of bearings operating under identical conditions. For an L hours life other than those listed in the Selection Chart, multiply the equivalent Radial load by one of the following factors. For 5, L hours life, use a factor of.8 and for 8,, use.39. Then select a bearing from the bold face (3,) L ratings only in the Selection Chart that has a rating equal to or greater than this value. Heavy Service For heavy shock loads, frequent shock loads or severe vibrations, add up to 5% (according to severity of conditions) to the Equivalent Radial Load to obtain a Modified Equivalent Radial Load. Consult Application Engineering for additional selection assistance. A thrust load value of C/ is recommended as a guide for general applications and will give adequate L life. Where substantial radial load pulls the housing away from the mounting base, both the hold-down bolts and housing must be of adequate strength. Auxiliary load carrying devices, such as sheer bars, are advisable for side or endloading of pillow blocks and radial loads for flange units. To determine the L hours life for loads and RPM s not listed use the following equation: L C P 3 x 6667 RPM Where: L = Life, hours C = Dynamic Capacity, lbs. or N P = Equivalent Radial Load, lbs. or N When the load on a ball bearing is solely a radial load with no thrust (axial) load, the Equivalent Radial Load (P) is equal to the actual radial load. However, when a thrust (axial) load is applied, the radial and thrust loads applied must be converted into an Equivalent Radial Load. The use of the X (radial factor) and Y (thrust factor) from Table convert the actual applied thrust and radial loads to an MODIFICATIONS PAGE 96 RELATED PRODUCTS PAGE 97 Equivalent Radial Load which has the same effect on the life of a bearing as a radial load of this magnitude. P = (X x F R ) + (Y x F A ) Where: P = Equivalent Radial Load, lbs. F R = Radial load, lbs. F A = Thrust load, lbs. e = Thrust load to radial load factor (Table ) X = Radial load factor (Table ) Y = Thrust Factor (Table ) C O = Basic static capacity To find X and Y, first calculate F A /C O to determine e. Calculate F A /F R and compare to e to determine the X and Y factors to use from Table. Substitute all known values into the Equivalent Radial Load equation. The Equivalent Radial loads (P) thus determined can be used in the L life formula or compared to the allowable Equivalent Radial Load rating desired in the expanded rating chart to select a bearing (Table ). If calculated value of P is less than F R, use P=F R. Table Radial/Thrust Factors If F A/ F R is equal to or If F A /F R is F A e less than e greater than e C o F A /F R e F A /F R > e X Y X Y Lubrication DODGE Ball Bearings are lubricated at the factory and are ready to run. The bearings are initially lubricated with Shell Alvania # and should be relubricated with the same or some equivalent. For high speeds, high loads, extreme temperatures and other abnormal operating conditions, special greases may be required. Contact DODGE Application Engineering for recommendations on these types of applications. Misalignment DODGE Ball Bearings are designed to allow a maximum of ± static misalignment. These bearings are not suitable for dynamic misalignment. To ensure good alignment, mounting surfaces must be checked for flatness and must lie in the same plane. When tightening base bolts, each bolt should be alternately tightened in incremental torque values until full torque is achieved to prevent the angular shifting of the pillow block that occurs when one bolt is tightened to its full torque. Shimming may be required to minimize misalignment. 5
3 Setscrew Ball Bearings - Inch - Table RING SHAFT SIZE DYMANIC STATIC L LIFE ALLOWABLE EQUIVALENT RADIAL LOAD RATING (LBS.) AT VARIOUS RPM* SIZE SC, VSC,SL, CC SCM CAPACITY C, Lbs. CAPACITY Co, Lbs. HOURS / / /4 3/ / / / / /6 -/ / /6-3/ /8 -/4-7/ / -7/6 - -/ ** /6 -/ / /6 -/4 4 /6-5/6 -/6-3/4-5/6 -/4-3/6-7/6 -/4-7/6 -/ /6 -/ / /6 3-/ * Slight interference fit required when operating on the right of the heavy line or in the shaded area. ** Piloted flange only. FEATURE/BENEFITS SETSCREW BALL BEARINGS PAGE HOW TO ORDER/ PAGE 4 ECCENTRIC COLLAR BALL BEARINGS PAGE 9 D-LOK BALL BEARINGS PAGE 87 6
4 Setscrew Ball Bearings - Inch - Table continued RING SHAFT SIZE DYMANIC STATIC L LIFE ALLOWABLE EQUIVALENT RADIAL LOAD RATING (LBS.) AT VARIOUS RPM* SIZE SC, VSC,SL, CC SCM CAPACITY C, Lbs. CAPACITY Co, Lbs. HOURS / / 3/4 3/ / / / / / / / /6-3/ /8 -/ / / -7/6 - -/ ** /6 -/ / /6 -/6-3/ /6-5/ / /4-3/6-7/6 -/ / /6 -/ /6 -/ / / / 6 * Slight interference fit required when operating on the right of the heavy line. ** Piloted flange only. DIMENSIONS, INCH PAGE DIMENSIONS, METRIC PAGE 7 MODIFICATIONS PAGE 96 RELATED PRODUCTS PAGE 97 7
5 Setscrew Ball Bearings - Metric - Table RING SHAFT SIZE DYMANIC STATIC L LIFE ALLOWABLE EQUIVALENT RADIAL LOAD RATING (N.) AT VARIOUS RPM* SIZE SC, VSC,SL, CC SCM CAPACITY C, N. CAPACITY Co, N. HOURS mm mm mm mm 5mm mm 3mm mm 35mm mm 4mm mm 45mm mm 5mm mm 55mm mm 65mm mm 7mm mm mm * Slight interference fit required when operating on the right of the heavy line or in the shaded area. FEATURE/BENEFITS SETSCREW BALL BEARINGS PAGE HOW TO ORDER/ PAGE 4 8 ECCENTRIC COLLAR BALL BEARINGS PAGE 9 D-LOK BALL BEARINGS PAGE 87
6 Setscrew Ball Bearings - Metric - Table continued RING SHAFT SIZE DYMANIC STATIC L LIFE ALLOWABLE EQUIVALENT RADIAL LOAD RATING (N.) AT VARIOUS RPM* SIZE SC, VSC,SL, CC SCM CAPACITY C, N. CAPACITY Co, N. HOURS mm mm mm mm 5mm mm 3mm mm 35mm mm 4mm mm 45mm mm 5mm mm 55mm mm 65mm mm 7mm mm mm * Slight interference fit required when operating on the right of the heavy line or in the shaded area. DIMENSIONS, INCH PAGE DIMENSIONS, METRIC PAGE 7 MODIFICATIONS PAGE 96 RELATED PRODUCTS PAGE 97 9
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